 |
| |||
| operational time | |||
| operating duration; operating life; operating reliability; operating time | |||
| διάρκεια λειτουργίας: 16 phrases in 8 subjects |
| Astronautics | 1 |
| Communications | 1 |
| Earth sciences | 1 |
| Electronics | 6 |
| Energy industry | 1 |
| Environment | 1 |
| Industry | 3 |
| Technology | 2 |